Polymer, electroluminescent device, and light emitting device

Abstract

A novel electroluminescent polymer is represented by the general formula (I). A is (a-1) or the like, and B or B′ is either the following (b-1) or (b-2). A film of the polymer represented by the general formula (I) can be formed by electrolytic polymerization, and further emits light in a different color by an electric field when a substituent thereof is changed. Therefore, a light-emitting device that is capable of multicolor displaying can be easily obtained.

1 . A polymer having the following general formula as a repeating unit.  
       
         
           
           
               
               
           
         
         [In the general formula (I), m and n are 1 or 2, A is any of the following (a-1) to (a-20), and B and B′ are identical or different, and are either (b-1) or (b-2).  
         
           
             
             
                 
                 
             
           
           
             
             
                 
                 
             
           
         
         (R 1  and R 2  of (a-1) and R 5  and R 6  of (a-20) are identical or different, and R 1  to R 6  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)  
         
           
             
             
                 
                 
             
           
         
         (R 7  and R 8  of (b-1) and R 9  and R 10  of (b-2) are respectively identical or different, and R 7  to R 10  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)])  
       
     
     
         2 . An electroluminescent device having a layer including a polymer having a repeating unit represented by the following general formula (I) between a pair of electrodes.  
       
         
           
           
               
               
           
         
         [In the general formula (I), m and n are 1 or 2, A is any of the following (a-1) to (a-20), and B and B′ are identical or different, and are either (b1) or (b-2).  
         
           
             
             
                 
                 
             
           
           
             
             
                 
                 
             
           
         
         (R 1  and R 2  of (a-1) and R 5  and R 6  of (a-20) are identical or different, and R 1  to R 6  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)  
         
           
             
             
                 
                 
             
           
         
         (R 7  and R 8  of (b-1) and R 9  and R 10  of (b-2) are respectively identical or different, and R 7  to R 10  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)] 
       
     
     
         3 . The light-emitting device according to  claim 1  or  2 , wherein the layer including the polymer is a layer formed by electrolytic polymerization.  
     
     
         4 . A light-emitting device having a plurality of electroluminescent devices, 
 wherein each of the plurality of electroluminescent devices has an opposed pair of electrodes and a layer including a polymer, which is formed between the pair of electrodes, and    wherein the polymer is a compound having a repeating unit represented by the following general formula (D).                          [In the general formula (I), m and n are 1 or 2, A is any of the following (a-1) to (a-20), and B and B′ are identical or different, and are either (b-1) or (b-2).                                            (R 1  and R 2  of (a-1) and R 5  and R 6  of (a-20) are identical or different, and R 1  to R 6  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)                          (R 7  and R 8  of (b1)) and R 9  and R 10  of (b-2) are respectively identical or different, and R 7  to R 10  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)]   
     
     
         5 . The light-emitting device according to  claim 4 , wherein at least one of the plurality of electroluminescent devices has the polymer which is different from those of the other electroluminescent devices.  
     
     
         6 . A light-emitting device having: 
 a substrate having an insulating surface;    a plurality of stripe-shaped first electrodes formed at the insulating surface of the substrate;    a layer including a polymer, which is formed on each of the plurality of first electrodes; and    a plurality of stripe-shaped second electrodes arranged to be orthogonal to the first electrodes, which are formed on the plurality of layers including the polymer,    wherein the polymer is a compound having a repeating unit represented by the following general formula (I).                          [In the general formula (I), m and n are 1 or 2, A is any of the following (a-1) to (a-20), and B and B′ are identical or different, and are either (b-1) or (b-2).                                            (R 1  and R 2  of (a-1) and R 5  and R 6  of (a-20) are identical or different, and R 1  to R 6  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)                          (R 7  and R 8  of (b-1) and R 9  and R 10  of (b-2) are respectively identical or different, and R 7  to R 10  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)]   
     
     
         7 . The light-emitting device according to  claim 6 , wherein at least one of the plurality of layers including the polymer has the polymer which is different from those of the other layers including the polymer.  
     
     
         8 . The light-emitting device according to  claim 6  or  7 , wherein the layers including the polymer are layers formed by electrolytic polymerization.  
     
     
         9 . A light-emitting device having: 
 a substrate having an insulating surface;    a plurality of first electrodes formed at the insulating surface of the substrate;    a layer including a polymer, which is formed on each of the plurality of first electrodes; and    a second electrode opposed to each of the plurality of first electrodes with the plurality of layers including the polymer interposed in between, wherein polymer is a compound having a repeating unit represented by the following general formula (I).                          [In the general formula (I), m and n are 1 or 2, A is any of the following (a-1) to (a-20), and B and B′ are identical or different, and are either (b1) or (b-2).                                            (R 1  and R 2  of (a-1) and R 5  and R 6  of (a-20) are identical or different, and R 1  to R 6  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)                          (R 7  and R 8  of (b-1) and R 9  and R 10  of (b-2) are respectively identical or different, and R 7  to R 10  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)]   
     
     
         10 . The light-emitting device according to  claim 9 , wherein at least one of the plurality of layers including the polymer has the included polymer which is different from those of the other layers including the polymer.  
     
     
         11 . A light-emitting device having a plurality of first to third pixels that emit light in different colors from each other on a substrate having an insulating surface, having: 
 a plurality of first electrodes;    a layer including a polymer, which is formed on each of the plurality of first electrodes; and    a second electrode opposed to the plurality of first electrodes, which is formed on the layer including the polymer,    wherein the first electrode is provided with respect to each of the plurality of first to third pixels, and the second electrode is provided in common with the plurality of first to third pixels, and    wherein the polymer is a compound that has a repeating unit represented by the following general formula (I), and the polymer of the layer including the polymer is different from each other in the first to third pixels.                          [In the general formula (I), m and n are 1 or 2, A is any of the following (a-1) to (a-20), and B and B′ are identical or different, and are either (b-1) or (b-2).                                            (R 1  and R 2  of (a-1) and R 5  and R 6  of (a-20) are identical or different, and R 1  to R 6  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)                          (R 7  and R 8  of (b-1) and R 9  and R 10  of (b-2) are respectively identical or different, and R 7  to R 10  are a hydrogen atom, a hologen atom, or an organic substituent that may include an oxygen atom, a sulfur atom or a nitrogen atom.)]   
     
     
         12 . The light-emitting device according to any one of  claims 9  to  11 , wherein the layer including the polymer is a layer formed by electrolytic polymerization.  
     
     
         13 . The light-emitting device according to any one of  claim 9  to  claim 11 , has a plurality of data signal lines, the plurality of scan signal lines, and a plurality of nonlinear elements connected to one of the data signal lines and one of the scan signal lines, wherein the plurality of first electrodes are respectively the nonlinear elements.  
     
     
         14 . The light-emitting device according to  claim 13 , wherein at least a thin film transistor is used as the nonlinear elements.